Hull Flex ?

[abl1111]

I was wondering - I have 23' Tsunami (1975). Recently, I hit a 2-3' chop wave, 'funny'/hard on a chine ( my teak door to the cabin was closed ) and the teak door cracked in several places from the hit.

It got me thinking. Could it have been that my hull flexed and the teak door got sandwiched between the door framing ?

I re-did the door with epoxy, and w/ a router, countersunk some teak biscuits set w/ epoxy in all the back-facing joints - she looks great and is solid as a rock.

Yesterday, I was cruising around, w/ the door closed again and I put my finger in the space between the edge of the door and the frame; 'the gap ' was definitely moving around a lot - note: the door is mounted solid via a piano hinge on one side.

Is this an indicator for hull flex ? And, is it a problem, or is it a common thing ?

My hull is very solid with absolutely no stress cracks anywhere except the normal toe rail ones.

What'cha think ?

PS: I have on my "to-do" list to remove the rub rail, remove the old SS screws that hold the topside to the hull and replace with ss bolts.